testing A3144 sensor

Today I got A3144 hall sensor.

First I thought I might use this sensor As current limiter .

but . turns out this pickup strong magnet in very close distance as only on 5v or 0v ( when pickup magnet).

default 5v and when pickup magnetic field, out put 5v.

has to very close distance to sensing.

I flow the strong current about 10Amp(create short circuit) but still not pick up magnetic field.